Supersecrecy means keeping something very, very secret, so that almost no one knows about it.
Supersecrecy can make people think of spies, hidden things, or important information.
Examples:
The government operates in supersecrecy.
The supersecrecy of the plan was impressive.
They work in supersecrecy to protect the information.
The supersecrecy of the surprise party was almost ruined!
In the supersecrecy of the night, the ninja moved silently.
The supersecrecy of the treasure map made it even more exciting to find.